How bad is chickenpox on a scale of 1 to 10?

The severity of chickenpox can vary from person to person, but on a scale of 1 to 10, it is generally considered to be between a 3 and a 6. For most people, it is a mild illness that causes itchy blisters, fever, and headache. However, in some cases, it can be more severe and cause complications such as pneumonia, encephalitis, and sepsis. These complications are more common in people with weakened immune systems, such as the elderly, pregnant women, and people with cancer.